/* Universal Selector */
    * {
      font-family: Arial, sans-serif;
    }

    /* Element Selector */
    p {
      color: blue;
    }

    /* ID Selector */
    #special {
      color: red;
      font-weight: bold;
    }

    /* Class Selector */
    .highlight {
      background-color: yellow;
      padding: 3px;
    }

    /* Group Selector */
    h2, h3 {
      color: green;
    }

    /* Descendant Selector */
    div p {
      font-style: italic;
    }

    /* Child Selector */
    div > span {
      color: purple;
    }

    /* Adjacent Sibling Selector */
    h3 + p {
      background: lightgray;
    }

    /* General Sibling Selector */
    h2 ~ p {
      border: 1px dashed orange;
    }

    /* Attribute Selector */
    a[target="_blank"] {
      color: brown;
    }